150.000
15W-40
I've also been trying to figure this out but all the tractor shops that i have talked to say any weight is fine and the transmission is 80w90 gear oil. The fluid level must be 3.5 inches from the top of the reservoir.
To add hydraulic oil to an International B275 tractor, locate the hydraulic oil reservoir, which is typically found near the rear of the tractor. Remove the filler cap, and use a funnel to pour in the appropriate hydraulic oil until it reaches the recommended level indicated on the dipstick or sight glass. Ensure you use the correct type of hydraulic fluid specified in the owner's manual for optimal performance. After adding oil, replace the cap securely.